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                    改变表的分区数
            
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                    如何使用MLSQL流式更新MySQL数据
            
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<pre><code>$SPARK_HOME/bin/spark-submit --class streaming.core.StreamingApp \
        --driver-memory ${DRIVER_MEMORY} \
        --jars ${JARS} \
        --master local[*] \
        --name mlsql \        
        --conf &quot;spark.scheduler.mode=FAIR&quot; \
       [1] ${MLSQL_HOME}/libs/${MAIN_JAR}    \ 
        -streaming.name mlsql    \
        -streaming.platform spark   \
        -streaming.rest true   \
        -streaming.driver.port 9003   \
        -streaming.spark.service true \
        -streaming.thrift false \
        -streaming.enableHiveSupport true
</code></pre><p>&#x4EE5;&#x4F4D;&#x7F6E;[1]&#x4E3A;&#x5206;&#x5272;&#x70B9;&#xFF0C;&#x524D;&#x9762;&#x4E3B;&#x8981;&#x90FD;&#x662F;Spark&#x76F8;&#x5173;&#x914D;&#x7F6E;&#xFF0C;&#x540E;&#x9762;&#x90E8;&#x5206;&#x5219;&#x662F;MLSQL&#x76F8;&#x5173;&#x914D;&#x7F6E;&#x3002;&#x4E5F;&#x6709;&#x53E6;&#x5916;&#x4E00;&#x4E2A;&#x533A;&#x522B;&#x70B9;&#xFF0C;spark&#x914D;&#x7F6E;&#x90FD;&#x4EE5;&#x4E24;&#x4E2A;&#x6A2A;&#x6760;&#x5F00;&#x5934;&#xFF0C;&#x800C;MLSQL&#x914D;&#x7F6E;&#x5219;&#x4EE5;&#x4E00;&#x4E2A;&#x6A2A;&#x6760;&#x5F00;&#x5934;&#x3002;</p>
<p>&#x901A;&#x8FC7;&#x5728;&#x8FD9;&#x79CD;&#x65B9;&#x5F0F;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x5C06;MLSQL Engine&#x8FD0;&#x884C;&#x5728;&#x5305;&#x62EC;K8s,Yarn,Mesos&#x4EE5;&#x53CA;Local&#x7B49;&#x5404;&#x79CD;&#x73AF;&#x5883;&#x4E4B;&#x4E0A;&#x3002;</p>
<p>&#x4E0B;&#x9762;&#x8868;&#x683C;&#x662F;MLSQL Engine&#x7684;&#x53C2;&#x6570;&#x8BF4;&#x660E;&#x3002;</p>
<blockquote>
<p>MLSQL&#x4E5F;&#x4F7F;&#x7528;&#x5230;&#x4E86;&#x5F88;&#x591A;&#x4EE5;spark&#x5F00;&#x5934;&#x7684;&#x53C2;&#x6570;&#xFF0C;&#x4ED6;&#x4EEC;&#x5FC5;&#x987B;&#x4F7F;&#x7528; --conf &#x6765;&#x8FDB;&#x884C;&#x914D;&#x7F6E;&#xFF0C;&#x800C;&#x4E0D;&#x662F; - &#x914D;&#x7F6E;&#x3002;&#x8FD9;&#x4E2A;&#x52A1;&#x5FC5;&#x8981;&#x6CE8;&#x610F;&#x3002;</p>
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<tr>
<td>streaming.master</td>
<td>&#x7B49;&#x4EF7;&#x4E8E;--master &#x5982;&#x679C;&#x5728;spark&#x91CC;&#x8BBE;&#x7F6E;&#x4E86;&#xFF0C;&#x5C31;&#x4E0D;&#x9700;&#x8981;&#x8BBE;&#x7F6E;&#x8FD9;&#x4E2A;</td>
<td></td>
</tr>
<tr>
<td>streaming.name</td>
<td>&#x5E94;&#x7528;&#x540D;&#x79F0;</td>
<td></td>
</tr>
<tr>
<td>streaming.platform</td>
<td>&#x5E73;&#x53F0;</td>
<td>&#x76EE;&#x524D;&#x53EA;&#x6709;spark</td>
</tr>
<tr>
<td>streaming.rest</td>
<td>&#x662F;&#x5426;&#x5F00;&#x542F;http&#x63A5;&#x53E3;</td>
<td>&#x5E03;&#x5C14;&#x503C;&#xFF0C;&#x9700;&#x8981;&#x8BBE;&#x7F6E;&#x4E3A;true</td>
</tr>
<tr>
<td>streaming.driver.port</td>
<td>HTTP&#x670D;&#x52A1;&#x7AEF;&#x53E3;</td>
<td>&#x4E00;&#x822C;&#x8BBE;&#x7F6E;&#x4E3A;9003</td>
</tr>
<tr>
<td>streaming.spark.service</td>
<td>&#x914D;&#x7F6E;streaming.rest &#x53C2;&#x6570;</td>
<td>&#x4E00;&#x822C;&#x8BBE;&#x7F6E;&#x4E3A;true</td>
</tr>
<tr>
<td>streaming.job.cancel</td>
<td>&#x652F;&#x6301;&#x8FD0;&#x884C;&#x8D85;&#x65F6;&#x8BBE;&#x7F6E;</td>
<td>&#x4E00;&#x822C;&#x8BBE;&#x7F6E;&#x4E3A;true</td>
</tr>
<tr>
<td>streaming.datalake.path</td>
<td>&#x6570;&#x636E;&#x6E56;&#x57FA;&#x76EE;&#x5F55; &#x4E00;&#x822C;&#x4E3A;HDFS</td>
<td>&#x9700;&#x8981;&#x8BBE;&#x7F6E;&#xFF0C;&#x5426;&#x5219;&#x5F88;&#x591A;&#x529F;&#x80FD;&#x4F1A;&#x4E0D;&#x53EF;&#x7528;&#xFF0C;&#x6BD4;&#x5982;&#x63D2;&#x4EF6;&#x7B49;&#x3002;</td>
</tr>
</tbody>
</table>
<h2 id="&#x63A5;&#x53E3;&#x6743;&#x9650;&#x63A7;&#x5236;"><a name="&#x63A5;&#x53E3;&#x6743;&#x9650;&#x63A7;&#x5236;" class="anchor-navigation-ex-anchor" href="#&#x63A5;&#x53E3;&#x6743;&#x9650;&#x63A7;&#x5236;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x63A5;&#x53E3;&#x6743;&#x9650;&#x63A7;&#x5236;</h2>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>spark.mlsql.auth.access_token</td>
<td>&#x5982;&#x679C;&#x8BBE;&#x7F6E;&#x4E86;&#xFF0C;&#x90A3;&#x4E48;&#x4F1A;&#x5F00;&#x542F;token&#x9A8C;&#x8BC1;&#xFF0C;&#x4EFB;&#x4F55;&#x8BBF;&#x95EE;&#x5F15;&#x64CE;&#x7684;&#x63A5;&#x53E3;&#x90FD;&#x9700;&#x8981;&#x5E26;&#x4E0A;&#x8FD9;&#x4E2A;token&#x624D;&#x4F1A;&#x88AB;&#x6388;&#x6743;</td>
<td>&#x9ED8;&#x8BA4;&#x4E0D;&#x5F00;&#x542F;</td>
</tr>
<tr>
<td>spark.mlsql.auth.custom</td>
<td>&#x8BBE;&#x7F6E;&#x63A5;&#x53E3;&#x8BBF;&#x95EE;&#x6388;&#x6743;&#x7684;&#x81EA;&#x5B9A;&#x4E49;&#x5B9E;&#x73B0;&#x7C7B;</td>
<td>&#x9ED8;&#x8BA4;&#x65E0;</td>
</tr>
</tbody>
</table>
<p>&#x7528;&#x6237;&#x53EF;&#x4EE5;&#x5C06;&#x5B9E;&#x73B0; <code>{def auth(params: Map[String, String]): (Boolean, String)</code> &#x7684;&#x7C7B;&#x4F7F;&#x7528;--jars&#x5E26;&#x4E0A;&#xFF0C;&#x7136;&#x540E;&#x901A;&#x8FC7; --conf spark.mlsql.auth.custom= YOUR CLASS NAME &#x6765;&#x8BBE;&#x7F6E;&#x81EA;&#x5B9A;&#x4E49;&#x7684;&#x63A5;&#x53E3;&#x6743;&#x9650;&#x8BBF;&#x95EE;&#x3002;</p>
<h2 id="&#x4E8C;&#x5C42;&#x901A;&#x8BAF;&#x53C2;&#x6570;"><a name="&#x4E8C;&#x5C42;&#x901A;&#x8BAF;&#x53C2;&#x6570;" class="anchor-navigation-ex-anchor" href="#&#x4E8C;&#x5C42;&#x901A;&#x8BAF;&#x53C2;&#x6570;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4E8C;&#x5C42;&#x901A;&#x8BAF;&#x53C2;&#x6570;</h2>
<p>MLSQL Engine&#x4F1A;&#x5728;Spark&#x4E4B;&#x4E0A;&#x6784;&#x5EFA;&#x4E00;&#x4E2A;&#x4E8C;&#x5C42;&#x901A;&#x8BAF;&#xFF0C;&#x65B9;&#x4FBF;driver&#x76F4;&#x63A5;&#x63A7;&#x5236;executor. </p>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>streaming.ps.cluster.enable</td>
<td>&#x662F;&#x5426;&#x5F00;&#x542F;&#x4E8C;&#x5C42;&#x901A;&#x8BAF;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;true</td>
</tr>
<tr>
<td>spark.ps.cluster.driver.port</td>
<td>&#x4E8C;&#x5C42;&#x901A;&#x8BAF;driver&#x7AEF;&#x53E3;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;7777</td>
</tr>
<tr>
<td>streaming.ps.ask.timeout</td>
<td>&#x901A;&#x8BAF;&#x8D85;&#x65F6;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;3600&#x79D2;</td>
</tr>
<tr>
<td>streaming.ps.network.timeout</td>
<td>&#x901A;&#x8BAF;&#x8D85;&#x65F6;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;28800&#x79D2;</td>
</tr>
</tbody>
</table>
<h2 id="hive&#x652F;&#x6301;&#x53C2;&#x6570;"><a name="hive&#x652F;&#x6301;&#x53C2;&#x6570;" class="anchor-navigation-ex-anchor" href="#hive&#x652F;&#x6301;&#x53C2;&#x6570;"><i class="fa fa-link" aria-hidden="true"></i></a>Hive&#x652F;&#x6301;&#x53C2;&#x6570;</h2>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>streaming.enableHiveSupport</td>
<td>&#x662F;&#x5426;&#x5F00;&#x542F;hive&#x652F;&#x6301;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;false</td>
</tr>
<tr>
<td>streaming.hive.javax.jdo.option.ConnectionURL</td>
<td>&#x7528;&#x6765;&#x914D;&#x7F6E;hive.javax.jdo.option.ConnectionURL</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;&#x7A7A;</td>
</tr>
</tbody>
</table>
<h2 id="&#x81EA;&#x5B9A;&#x4E49;udf-jar&#x5305;&#x6CE8;&#x518C;"><a name="&#x81EA;&#x5B9A;&#x4E49;udf-jar&#x5305;&#x6CE8;&#x518C;" class="anchor-navigation-ex-anchor" href="#&#x81EA;&#x5B9A;&#x4E49;udf-jar&#x5305;&#x6CE8;&#x518C;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x81EA;&#x5B9A;&#x4E49;UDF jar&#x5305;&#x6CE8;&#x518C;</h2>
<p>&#x5982;&#x679C;&#x6211;&#x4EEC;&#x5C06;&#x81EA;&#x5DF1;&#x7684;UDF&#x6253;&#x5305;&#x8FDB;Jar&#x5305;&#x91CC;&#xFF0C;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x5728;&#x542F;&#x52A8;&#x7684;&#x65F6;&#x5019;&#x544A;&#x8BC9;&#x7CFB;&#x7EDF;&#x5BF9;&#x5E94;&#x7684;UDF &#x7C7B;&#x540D;&#x79F0;&#x3002;
UDF&#x7684;&#x7F16;&#x5199;&#x9700;&#x8981;&#x7B26;&#x5408;MLSQL&#x7684;&#x89C4;&#x8303;&#x3002;&#x6211;&#x4EEC;&#x63A8;&#x8350;&#x76F4;&#x63A5;&#x5728;Console&#x91CC;&#x52A8;&#x6001;&#x7F16;&#x5199;UDF/UDAF&#x3002;</p>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>streaming.udf.clzznames</td>
<td>&#x652F;&#x6301;&#x591A;&#x4E2A;class,&#x7528;&#x9017;&#x53F7;&#x5206;&#x9694;</td>
</tr>
</tbody>
</table>
<h2 id="&#x79BB;&#x7EBF;&#x63D2;&#x4EF6;&#x5B89;&#x88C5;"><a name="&#x79BB;&#x7EBF;&#x63D2;&#x4EF6;&#x5B89;&#x88C5;" class="anchor-navigation-ex-anchor" href="#&#x79BB;&#x7EBF;&#x63D2;&#x4EF6;&#x5B89;&#x88C5;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x79BB;&#x7EBF;&#x63D2;&#x4EF6;&#x5B89;&#x88C5;</h2>
<p>&#x786E;&#x4FDD;&#x63D2;&#x4EF6;&#x7684;jar&#x5305;&#x90FD;&#x662F;&#x7528;<code>--jars</code>&#x5E26;&#x4E0A;&#x3002;&#x5E76;&#x4E14;&#x76EE;&#x524D;&#x53EA;&#x652F;&#x6301;app&#x63D2;&#x4EF6;&#x3002;</p>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>streaming.plugin.clzznames</td>
<td>&#x652F;&#x6301;&#x591A;&#x4E2A;class,&#x7528;&#x9017;&#x53F7;&#x5206;&#x9694;</td>
</tr>
</tbody>
</table>
<p>&#x53EF;&#x901A;&#x8FC7;&#x5982;&#x4E0B;&#x5730;&#x5740;&#x4E0B;&#x8F7D;&#x63D2;&#x4EF6;(&#x586B;&#x5199;&#x63D2;&#x4EF6;&#x540D;&#x548C;&#x7248;&#x672C;)&#xFF1A;</p>
<pre><code>http://store.mlsql.tech/run?action=downloadPlugin&amp;pluginType=MLSQL_PLUGIN&amp;pluginName=mlsql-excel-2.4&amp;version=0.1.0-SNAPSHOT
</code></pre><h2 id="session&#x8BBE;&#x7F6E;"><a name="session&#x8BBE;&#x7F6E;" class="anchor-navigation-ex-anchor" href="#session&#x8BBE;&#x7F6E;"><i class="fa fa-link" aria-hidden="true"></i></a>session&#x8BBE;&#x7F6E;</h2>
<p>MLSQL&#x652F;&#x6301;&#x7528;&#x6237;&#x7EA7;&#x522B;Session,&#x8BF7;&#x6C42;&#x7EA7;&#x522B;Session&#x3002;&#x6BCF;&#x4E2A;Session&#x76F8;&#x5F53;&#x4E8E;&#x6784;&#x5EFA;&#x4E86;&#x4E00;&#x4E2A;&#x6C99;&#x76D2;&#xFF0C;&#x907F;&#x514D;&#x4E0D;&#x540C;&#x8BF7;&#x6C42;&#x4E4B;&#x95F4;&#x53D1;&#x751F;&#x51B2;&#x7A81;&#x3002;&#x9ED8;&#x8BA4;&#x662F;&#x7528;&#x6237;&#x7EA7;&#x522B;Session,&#x5982;&#x679C;&#x5E0C;&#x671B;&#x4F7F;&#x7528;&#x8BF7;&#x6C42;&#x7EA7;&#x522B;Session&#xFF0C;&#x9700;&#x8981;&#x5728;&#x8BF7;&#x6C42;&#x4E0A;&#x5E26;&#x4E0A; <code>sessionPerRequest</code> &#x53C2;&#x6570;&#x3002;&#x5BF9;&#x6B64;&#x53C2;&#x770B;<a href="http://docs.mlsql.tech/mlsql-engine/api/run-script.html" target="_blank">Rest&#x63A5;&#x53E3;&#x8BE6;&#x89E3;</a>&#x3002;</p>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>spark.mlsql.session.idle.timeout</td>
<td>session&#x4E00;&#x76F4;&#x4E0D;&#x4F7F;&#x7528;&#x7684;&#x8D85;&#x65F6;&#x65F6;&#x95F4;</td>
<td>30&#x5206;&#x949F;</td>
</tr>
<tr>
<td>spark.mlsql.session.check.interval</td>
<td>session&#x8D85;&#x65F6;&#x68C0;&#x67E5;&#x5468;&#x671F;</td>
<td>5&#x5206;&#x949F;</td>
</tr>
</tbody>
</table>
<h2 id="&#x5206;&#x5E03;&#x5F0F;&#x65E5;&#x5FD7;&#x6536;&#x96C6;"><a name="&#x5206;&#x5E03;&#x5F0F;&#x65E5;&#x5FD7;&#x6536;&#x96C6;" class="anchor-navigation-ex-anchor" href="#&#x5206;&#x5E03;&#x5F0F;&#x65E5;&#x5FD7;&#x6536;&#x96C6;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5206;&#x5E03;&#x5F0F;&#x65E5;&#x5FD7;&#x6536;&#x96C6;</h2>
<p>MLSQL Engine&#x652F;&#x6301;&#x5C06;&#x90E8;&#x5206;&#x4EFB;&#x52A1;&#x7684;&#x65E5;&#x5FD7;&#x53D1;&#x9001;&#x5230;Driver&#x3002;</p>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>streaming.executor.log.in.driver</td>
<td>&#x662F;&#x5426;&#x5728;driver&#x542F;&#x52A8;&#x65E5;&#x5FD7;&#x670D;&#x52A1;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;true</td>
</tr>
</tbody>
</table>
<h2 id="&#x6743;&#x9650;&#x6821;&#x9A8C;"><a name="&#x6743;&#x9650;&#x6821;&#x9A8C;" class="anchor-navigation-ex-anchor" href="#&#x6743;&#x9650;&#x6821;&#x9A8C;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x6743;&#x9650;&#x6821;&#x9A8C;</h2>
<table>
<thead>
<tr>
<th>&#x53C2;&#x6570;</th>
<th>&#x8BF4;&#x660E;</th>
<th>&#x793A;&#x4F8B;&#x503C;</th>
</tr>
</thead>
<tbody>
<tr>
<td>spark.mlsql.enable.runtime.directQuery.auth</td>
<td>&#x5F00;&#x542F;directQuery&#x8BED;&#x53E5;&#x8FD0;&#x884C;&#x65F6;&#x6743;&#x9650;&#x6821;&#x9A8C;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;false</td>
</tr>
<tr>
<td>spark.mlsql.enable.runtime.select.auth</td>
<td>&#x5F00;&#x542F;select&#x8BED;&#x53E5;&#x8FD0;&#x884C;&#x65F6;&#x6743;&#x9650;&#x6821;&#x9A8C;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;false</td>
</tr>
<tr>
<td>spark.mlsql.enable.datasource.rewrite</td>
<td>&#x5F00;&#x542F;&#x6570;&#x636E;&#x6E90;&#x52A0;&#x8F7D;&#x65F6;&#x52A8;&#x6001;&#x5220;&#x9664;&#x975E;&#x6388;&#x6743;&#x5217;</td>
<td>&#x9ED8;&#x8BA4;&#x4E3A;false</td>
</tr>
<tr>
<td>spark.mlsql.datasource.rewrite.implClass</td>
<td>&#x8BBE;&#x7F6E;&#x81EA;&#x5B9A;&#x4E49;&#x6570;&#x636E;&#x6E90;&#x5217;&#x63A7;&#x5236;&#x7684;&#x5B9E;&#x73B0;&#x7C7B;</td>
</tr>
</tbody>
</table>
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